CN208028583U - The user oriented multi-modal complex energy feed system of direct current heating system - Google Patents
The user oriented multi-modal complex energy feed system of direct current heating system Download PDFInfo
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- CN208028583U CN208028583U CN201820436643.4U CN201820436643U CN208028583U CN 208028583 U CN208028583 U CN 208028583U CN 201820436643 U CN201820436643 U CN 201820436643U CN 208028583 U CN208028583 U CN 208028583U
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Abstract
The utility model is related to the user oriented multi-modal complex energy feed systems of field of new energy technologies more particularly to a kind of direct current heating system.The flexible switching of different distributions formula power supply operational mode may be implemented in it.It registers one's residence alternating current, photovoltaic generating system, wind generator system, energy-storage system, 220V DC bus, daily load and direct current heating system including 220V；Alternating current is connected with AC/DC rectifiers, which is connected with interconnection switch K1, is connected to 220V DC bus by interconnection switch K1；Photovoltaic generating system is connected to 220V DC bus by interconnection switch K2；Wind generator system is connected to 220V DC bus by interconnection switch K3；Daily load is connected with DC/AC inverters, which is connected to 220V DC bus by interconnection switch K4；Direct current heating system is connected with frequency converter, which is connected with DC/DC transverters, which is connected to 220V DC bus by interconnection switch K5；Energy-storage system is connected to 220V DC bus by interconnection switch K6.
Description
Technical field
The utility model is related to field of new energy technologies more particularly to a kind of user oriented multimodes of direct current heating system
State complex energy feed system.
Background technology
Distributed power generation as a kind of regenerative resource one kind it is important utilize form, obtained quick hair in world wide
Exhibition.Distributed generation resource, in the huge advantage of power supply reliability, flexibility and reduction environmental pollution etc., receives people with it
Extensive concern.In regenerative resource, solar energy, wind energy have obtained development at full speed.
Solar energy, wind energy effectively reduce the discharge of carbon dioxide, are the environmentally friendly energy, and existing wind-force supplies
In electric, solar powered or wind-photovoltaic complementary power supply system, electric energy is stored in energy storage device, is stored up when needing to use
Electric energy supply load in energy device, there are multiple unsteady flow links in this power supply process, energy utilization rate is low.In actual life
In for heat problem, especially in outlying mountain area or isolated island, heat supply electrical problem consumes a big chunk energy.Tradition
Electrothermal water heater it is very low to the utilization rate of the energy, which adds the capacity of wind and light generating system demand, to increase
System cost.
Invention content
The utility model provides a kind of the user oriented of direct current heating system aiming at defect of the existing technology
The flexible switching of different distributions formula power supply operational mode may be implemented in multi-modal complex energy feed system.
To achieve the above object, the utility model adopts the following technical solution, including 220V registers one's residence alternating current, photovoltaic generation
System, wind generator system, energy-storage system, 220V DC bus, daily load and direct current heating system.
220V alternating currents of registering one's residence are connected with an AC/DC rectifiers, which is connected with interconnection switch K1,
It is connected to 220V DC bus by interconnection switch K1.
The photovoltaic generating system is connected to 220V DC bus by interconnection switch K2.
The wind generator system is connected to 220V DC bus by interconnection switch K3.
The daily load is connected with DC/AC inverters, which is connected with interconnection switch K4, passes through contact
Switch K4 is connected to 220V DC bus.
The direct current heating system is connected with frequency converter, which is connected with a DC/DC transverters, the DC/DC changes of current
Device is connected to 220V DC bus by interconnection switch K5.
The energy-storage system is connected to 220V DC bus by interconnection switch K6.
As a kind of preferred embodiment of the utility model, the photovoltaic generating system includes photovoltaic cell, lightning protection confluence
Case, photovoltaic controller；The photovoltaic cell is connected with a lightning-proof header box, and the lightning-proof header box is connected with photovoltaic controller,
The photovoltaic controller is connected with the input terminal of another DC/DC transverters；The output end of the DC/DC transverters and interconnection switch K2 phases
Even.
As another preferred embodiment of the utility model, the wind generator system includes wind-driven generator, Ling Yifang
Thunder header box, wind-powered electricity generation controller and another AC/DC rectifiers；The wind-driven generator is connected with another lightning-proof header box, described
Lightning-proof header box is connected with wind-powered electricity generation controller, and the wind-powered electricity generation controller is connected with the input of another AC/DC rectifiers, the AC/DC
The output of rectifier is connected with interconnection switch K3.
As another preferred embodiment of the utility model, the energy-storage system includes super capacitor, accumulator, energy storage change
Flow device；The input of the energy accumulation current converter is connected with super capacitor and accumulator respectively, the output of the energy accumulation current converter and the
Three DC/DC transverters are connected；The DC/DC transverters are connect with interconnection switch K6.
As another preferred embodiment of the utility model, the direct current heating system includes water tank, which is provided with
Cold water inlet and hot water outlet are provided with condenser in the water tank；Further include for store the fluid reservoir of refrigerant, with
Fluid reservoir connected expansion valve, evaporator and compressor；The import of the fluid reservoir is connected by pipeline with condenser, the liquid storage
The outlet of tank is connected by pipeline with the entrance of evaporator, and expansion valve is provided on the pipeline that fluid reservoir is connected with evaporator；It should
The outlet of evaporator is connected with suction port of compressor, the compressor（Direct current heat pump）Outlet be connected with condenser, the compressor
Feeder ear is connected with the frequency converter.
As another preferred embodiment of the utility model, described interconnection switch K1, K2, K3, K4, K5 and K6 are respectively with one
Output relay is connected, which is connected with a PLC；The interconnection switch K1, K2, K3, K4, K5, K6 are respectively connected with respectively
From interconnection switch state detector, the PLC is connected with interconnection switch state detector.
As another preferred embodiment of the utility model, the interconnection switch state detector is monitored using on off state
Module.
The utility model advantageous effect compared with prior art.
The flexibility of the feed system operation mode of the utility model；The feed system has 5 kinds of operation modes, various distributions
Formula power supply, load, energy storage device operating mode controlled by interconnection switch, cut-off state by controlling K1-K6, may be implemented
The flexible switching of different distributions formula power supply operational mode.
Conversion between the utility model multiple kinds of energy, the system may be implemented between wind energy, luminous energy, thermal energy and electric energy
Unidirectional conversion, while the two-way conversion between electric energy and energy storage may be implemented.By the rational allocation between various energy, realize
The sufficient supply of energy, and more efficiently use energy.
The diversity of the utility model distributed generation resource and energy-storage travelling wave tube efficiently uses regenerative resource and ensures distribution
The diversity of power supply is reduced influence of the supply of electric power to environment and was both passed through using alternate battery and super capacitor as energy-storage travelling wave tube
Ji, and environmental pollution is reduced, service life is relatively long, and charging rate is very fast.
The utility model busbar is 220V DC bus, has 6 ports, the port for connecting daily load can be directly by direct current
220V is reverse into alternating current 220V, is directly used for daily load, need not carry out transformation again, substantially reduce the damage of electric energy in transformation
Consumption.
Other than the function of having hot water preparing, cold water source is directly entered into water the utility model direct current heating system
Mouthful, it is carrier using heat transfer medium, by the forced heat-exchanging of evaporator, the draw heat from air, while circulated in countercurrent absorbs
The heat that the refrigerant of high temperature and pressure after compressor compresses releases plays the purpose of heating cold water.
The flexibility of the utility model power supply heating system operating mode, the system have 5 kinds of mode, various distributed electricals
Source, load, energy storage device operation mode controlled by interconnection switch, cut-off state by controlling K1-K6, may be implemented difference
The flexible switching of distributed generation resource operational mode.
Description of the drawings
The utility model is described further with reference to the accompanying drawings and detailed description.Scope of protection of the utility model
It is not only limited to the statement of the following contents.
Fig. 1 is the utility model feed system schematic diagram.
Fig. 2 is the utility model direct current heating system schematic diagram.
In figure, 1 it is water inlet, 2 is water outlet, 3 is water tank, 4 is condenser, 5 is fluid reservoir, 6 is expansion valve, 8 is steaming
Hair device, 9 are compressor.
Specific implementation mode
As shown in Figs. 1-2, the utility model includes that 220V registers one's residence alternating current, photovoltaic generating system, wind generator system, storage
It can system, 220V DC bus, daily load and direct current heating system.
220V alternating currents of registering one's residence are connected with an AC/DC rectifiers, which is connected with interconnection switch K1,
It is connected to 220V DC bus by interconnection switch K1.
The photovoltaic generating system is connected to 220V DC bus by interconnection switch K2.
The wind generator system is connected to 220V DC bus by interconnection switch K3.
The daily load is connected with DC/AC inverters, which is connected with interconnection switch K4, passes through contact
Switch K4 is connected to 220V DC bus.
The direct current heating system is connected with frequency converter, which is connected with DC/DC transverters, the DC/DC transverters
It is connected to 220V DC bus by interconnection switch K5.
The energy-storage system is connected to 220V DC bus by interconnection switch K6.
Preferably, the photovoltaic generating system includes that photovoltaic cell, a lightning-proof header box, photovoltaic controller and DC/DC are changed
Flow device；The photovoltaic cell is connected with a lightning-proof header box, and the lightning-proof header box is connected with photovoltaic controller, photovoltaic control
Device is connected with the input terminal of DC/DC transverters；The output end of the DC/DC transverters is connected with interconnection switch K2.
Preferably, the wind generator system includes wind-driven generator, another lightning-proof header box, wind-powered electricity generation controller and another
AC/DC rectifiers；The wind-driven generator is connected with another lightning-proof header box, the lightning-proof header box and wind-powered electricity generation controller phase
Even, the wind-powered electricity generation controller is connected with the input of another AC/DC rectifiers, output and the interconnection switch K3 of the AC/DC rectifiers
It is connected.
Preferably, the energy-storage system includes super capacitor, accumulator, energy accumulation current converter（PCS）And DC/DC transverters；
The input of the energy accumulation current converter is connected with super capacitor and accumulator respectively, and output and the DC/DC of the energy accumulation current converter are changed
Device is flowed to be connected；The DC/DC transverters are connect with interconnection switch K6.
Preferably, the direct current heating system includes water tank 3, which is provided with cold water inlet 1 and hot water outlet
2, condenser 4 is provided in the water tank 3；Further include for storing the fluid reservoir 5 of refrigerant, the expansion being connected with fluid reservoir 5
Valve 6, evaporator 8 and compressor 9；The import of the fluid reservoir 5 is connected by pipeline with condenser 4, and the outlet of the fluid reservoir 5 is logical
Piping is connected with the entrance of evaporator 8, and expansion valve 6 is provided on the pipeline that fluid reservoir 5 is connected with evaporator 8；The evaporator 8
Outlet be connected with 9 entrance of compressor, the compressor 9（Direct current heat pump）Outlet be connected with condenser 4, the confession of the compressor 9
Electric end is connected with the frequency converter.
Preferably, described interconnection switch K1, K2, K3, K4, K5 and K6 are connected with an output relay respectively, the output after
Electric appliance is connected with a PLC；The interconnection switch K1, K2, K3, K4, K5, K6 are respectively connected with respective interconnection switch state detector,
The PLC is connected with interconnection switch state detector.
Preferably, the interconnection switch state detector uses on off state monitoring modular.Interconnection switch detector monitors
Each switch operating status；PLC judges interconnection switch working condition by the testing result of interconnection switch detector, and PLC passes through
Control output relay come control interconnection switch point and action.The switching for realizing power supply, compared with traditional equipment, structure letter
It is list, small power consumption, at low cost.
Specifically, the busbar is 220V DC bus, there is 6 ports, and the port for connecting daily load can directly will be straight
Stream 220V is reverse into alternating current 220V, is directly used for daily load, need not carry out transformation again.
The DC bus passes through master & slave control, i.e. voltage on bulk power grid control bus when DC bus is networked；
When DC bus isolated network, by master & slave control, the energy storage device of large capacity controls direct current bus bar pressure and frequency.It is described
Energy-storage system, including PCS device cabinet, battery cupboard and super capacitor, battery cupboard and super capacitor are coupled with PCS device cabinet, storage
Equipment in energy unit, is connected to through interconnection switch on DC bus, realizes the energy two-way exchange between battery and power grid, can work
Make in battery charging mode and storage battery energy feedback pattern.In independent operating, energy storage link can support power supply system certainly
Main stable operation, stabilizing system disturbance maintain power generation/load dynamic equilibrium, voltage/frequency are kept to stablize；In isolated power grid and
Be incorporated into the power networks mutual switching when, energy storage device ensures important load voltage stabilization, while realizing and taking over seamlessly as main power source.
As shown in Fig. 2, the operation principle of the direct current heating system system is：Four square frame-shaped arrows indicate in Fig. 2
Medium circulation direction.By 6 reducing pressure by regulating flow of expansion valve, the refrigerant in fluid reservoir 5 is discharged into heat transfer medium, is then conducted heat
Medium evaporation endothermic in evaporator 8, the heat transfer medium with refrigerant flow to compressor 9 again, and the high temperature that compressor 9 is discharged is high
The condenser in vaporish refrigerant flow direction water tank 3, condenser is pressed to condense heat release, heat is transmitted to through water tank 3 originally
Water.Cold water absorbs the heat of above process condenser release, is then flowed out from hot-water outlet pipe by entering into cold water pipe.This is
The advantages of system, is：The system is other than the function of having hot water preparing, moreover it is possible to be freezed by refrigeration system.Entire refrigeration system
It is electricity consumption to drive, but heating system is by heat exchange come heat supply, while the system is direct current supply, is reduced
Intermediate unsteady flow link, increases the utilization ratio of electric energy, is effective in energy conservation and environmental protection angle.
The 220V alternating currents of registering one's residence are connected to through interconnection switch K1 on DC bus M1, and photovoltaic generating system is through interconnection switch
K2 is connected on busbar M1, and the wind generator system is connected to through interconnection switch K3 on busbar M1, and energy-storage system is through interconnection switch K6
It is connected on busbar M1, daily load is connected to through interconnection switch K4 on M1, and heating system is connected to through interconnection switch K5 on busbar M1.
By the state of each interconnection switch, the unidirectional conversion between wind energy, luminous energy, thermal energy and electric energy can be realized, simultaneously
The two-way conversion between electric energy and energy storage may be implemented, carry out rational allocation, realize the sufficient supply of energy.
The system includes following several mode：Bulk power grid supplies mode, the grid-connected supply mode of photoelectricity, wind-electricity integration and supplies mould
The grid-connected supply mode of state, wind-powered electricity generation photoelectricity, energy storage supply mode.Its mode and the state of interconnection switch are closely related, specific as follows.
（1）Bulk power grid supplies mode.
When interconnection switch K1, K4, K5 are closed, K2 and K3 are disconnected, and system is in bulk power grid supply mode, in this case new energy
Source and energy storage device all do not access, and only flow to load side by bulk power grid by the daily load of bulk power grid band and heating system, energy.
（2）The grid-connected supply mode of photoelectricity.
When interconnection switch K1, K2, K4, K5, K6 are closed, K3 is disconnected, and system is in the grid-connected supply mode of photoelectricity, in this case
Photovoltaic generation accesses, and by the daily load of photovoltaic generation band and heating plant, while photovoltaic generation sends out extra electric energy and can store up
It is stored to energy-storage system, energy flows to load side and energy storage device by bulk power grid and photovoltaic system.
（3）Wind-electricity integration supplies mode.
When interconnection switch K1, K3, K4, K5, K6 are closed, K2 is disconnected, and system is in wind-electricity integration supply mode, in this case
Wind-power electricity generation accesses, by the daily load of wind generator system band and heating system, while wind-power electricity generation send out extra electric energy can
To be stored into energy-storage system, energy flows to load side and energy storage device by bulk power grid and wind generator system.
（4）The grid-connected supply mode of wind-powered electricity generation photoelectricity.
When interconnection switch K1, K2, K3, K4, K5, K6 are closed, system is in the grid-connected supply mode of wind-powered electricity generation photoelectricity, in this case
Photovoltaic, wind-force generate electricity access simultaneously, and by wind-power electricity generation and photovoltaic generation together with daily load and heating system, while wind-force is sent out
Electricity and photovoltaic generation, which send out extra electric energy, can be stored into energy-storage system, and energy is by bulk power grid, photovoltaic system and wind-power electricity generation
System flows to load side and energy storage device.
（5）Energy storage supplies mode.
When interconnection switch K4, K5, K6 are closed, K1, K2 and K3 are disconnected, and system is in energy storage supply mode, stores up in this case
Energy device access, load side is flowed to by the daily load of energy storage device band and heating system, energy by energy-storage system.
It is understood that above with respect to the specific descriptions of the utility model, it is merely to illustrate the utility model and is not
It is limited to technical solution described in the utility model embodiment, it will be understood by those of ordinary skill in the art that, it still can be with
It modifies to the utility model or equivalent replacement, to reach identical technique effect；Needs are used as long as meeting, all in this reality
Within novel protection domain.
Claims (7)
1. the user oriented multi-modal complex energy feed system of direct current heating system, which is characterized in that register one's residence including 220V
Alternating current, photovoltaic generating system, wind generator system, energy-storage system, 220V DC bus, daily load and direct current heat supply system
System；
220V alternating currents of registering one's residence are connected with an AC/DC rectifiers, which is connected with interconnection switch K1, passes through
Interconnection switch K1 is connected to 220V DC bus；
The photovoltaic generating system is connected to 220V DC bus by interconnection switch K2；
The wind generator system is connected to 220V DC bus by interconnection switch K3；
The daily load is connected with DC/AC inverters, which is connected with interconnection switch K4, passes through interconnection switch
K4 is connected to 220V DC bus；
The direct current heating system is connected with frequency converter, which is connected with a DC/DC transverters, and the DC/DC transverters are logical
It crosses interconnection switch K5 and is connected to 220V DC bus；
The energy-storage system is connected to 220V DC bus by interconnection switch K6.
2. the user oriented multi-modal complex energy feed system of direct current heating system according to claim 1, special
Sign is：The photovoltaic generating system includes photovoltaic cell, a lightning-proof header box, photovoltaic controller；The photovoltaic cell and one
Lightning-proof header box is connected, and the lightning-proof header box is connected with photovoltaic controller, the photovoltaic controller and another DC/DC transverters
Input terminal is connected；The output end of the DC/DC transverters is connected with interconnection switch K2.
3. the user oriented multi-modal complex energy feed system of direct current heating system according to claim 2, special
Sign is：The wind generator system includes wind-driven generator, another lightning-proof header box, wind-powered electricity generation controller and another AC/DC whole
Flow device；The wind-driven generator is connected with another lightning-proof header box, and the lightning-proof header box is connected with wind-powered electricity generation controller, the wind
Electric controller is connected with the input of another AC/DC rectifiers, and the output of the AC/DC rectifiers is connected with interconnection switch K3.
4. the user oriented multi-modal complex energy feed system of direct current heating system according to claim 2, special
Sign is：The energy-storage system includes super capacitor, accumulator, energy accumulation current converter；The input of the energy accumulation current converter respectively with
Super capacitor and accumulator are connected, and the output of the energy accumulation current converter is connected with the 3rd DC/DC transverters；The DC/DC transverters
It is connect with interconnection switch K6.
5. the user oriented multi-modal complex energy feed system of direct current heating system according to claim 1, special
Sign is：The direct current heating system includes water tank, which is provided with cold water inlet and hot water outlet, in the water tank
It is provided with condenser；Further include for storing the fluid reservoir of refrigerant, the expansion valve being connected with fluid reservoir, evaporator and compression
Machine；The import of the fluid reservoir is connected by pipeline with condenser, and the outlet of the fluid reservoir passes through the entrance of pipeline and evaporator
It is connected, expansion valve is provided on the pipeline that fluid reservoir is connected with evaporator；The outlet of the evaporator is connected with suction port of compressor, should
The outlet of compressor is connected with condenser, and the feeder ear of the compressor is connected with the frequency converter.
6. the user oriented multi-modal complex energy feed system of direct current heating system according to claim 1, special
Sign is：Described interconnection switch K1, K2, K3, K4, K5 and K6 are connected with an output relay respectively, the output relay and one
PLC is connected；Described interconnection switch K1, K2, K3, K4, K5, K6 are respectively connected with respective interconnection switch state detector, the PLC
It is connected with interconnection switch state detector.
7. the user oriented multi-modal complex energy feed system of direct current heating system according to claim 6, special
Sign is：The interconnection switch state detector uses on off state monitoring modular.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820436643.4U CN208028583U (en) | 2018-03-29 | 2018-03-29 | The user oriented multi-modal complex energy feed system of direct current heating system |
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| CN201820436643.4U CN208028583U (en) | 2018-03-29 | 2018-03-29 | The user oriented multi-modal complex energy feed system of direct current heating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864725A (en) * | 2020-08-14 | 2020-10-30 | 珠海格力电器股份有限公司 | Wind-solar-storage integrated air conditioning system based on common direct current bus and control method thereof |
| CN112636383A (en) * | 2019-10-08 | 2021-04-09 | 阳光电源股份有限公司 | Wind-solar integrated high-power grid-connected system and control method thereof |
-
2018
- 2018-03-29 CN CN201820436643.4U patent/CN208028583U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636383A (en) * | 2019-10-08 | 2021-04-09 | 阳光电源股份有限公司 | Wind-solar integrated high-power grid-connected system and control method thereof |
| CN111864725A (en) * | 2020-08-14 | 2020-10-30 | 珠海格力电器股份有限公司 | Wind-solar-storage integrated air conditioning system based on common direct current bus and control method thereof |
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